AVR may refer to: Railroad Allegheny Valley Railroad (1995), shortline railroad in Pennsylvania, U.S. Aroostook Valley Railroad, a defunct railroad in Maine, U.S. Assiniboine Valley Railway, a m
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6a2f422dc68903ca6369662d3f07fd8c3aae6a2e59a723a57d6d4047918859. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bae14b7-4c75-4bf9-8f43-ea2fed4ff41f.json and https://artists.proofprofile.net/proofs/artist/0bae14b7-4c75-4bf9-8f43-ea2fed4ff41f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).